参数资料
型号: TPS65930A2ZCHR
厂商: TEXAS INSTRUMENTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PBGA139
封装: 10 X 10 MM, 0.65 MM PITCH, GREEN, PLASTIC, NFBGA-139
文件页数: 70/115页
文件大小: 1232K
代理商: TPS65930A2ZCHR
DigitalPGA
gain=0dB
AnalogPGA
gain=0dB
Amp
0dB
DAC
1.35VPP
0dBFs
USB
Amp
–0.6dB
037-052
SWCS037G
– MAY 2008 – REVISED APRIL 2011
NOTE
For other component values, see Table 14-1.
Example of ferrite: BLM 18BD221SN1.
6.1.3
Carkit Output
The USB-CEA carkit uses the DP/DM pad to output audio signals (see the CEA-936
–Mini-USB Analog
Carkit specification).
Figure 6-4 shows the carkit output downlink full path characteristics for audio and USB.
Figure 6-4. Carkit Output Downlink Path Characteristics
Table 6-3 lists the USB-CEA carkit audio downlink electrical characteristics.
Table 6-3. USB-CEA Carkit Audio Downlink Electrical Characteristics
Parameter
Conditions
Min
Typ
Max
Unit
Output load
USB-CEA (DP/DM)
20
k
Gain range(1)
Audio path
–92
30
dB
Voice path
–66
30
Absolute gain error
At 1 kHz
–1
1
dB
Peak-to-peak differential output voltage (0 dBFs)
Gain = 0 dB
1.5
VPP
Total harmonic distortion
At 0 dBFs
–80
–75
dB
At
–6 dBFs
–74
–69
At
–20 dBFs
–70
–65
At
–60 dBFs
–30
–25
THD+N (20 Hz to 20 kHz, A-weighted)
At 0 dBFs
60
dB
Idle channel noise (20 Hz to 20 kHz, A-weighted)
Default gain(2)
–90
–85
dB
Output PSRR
20 Hz to 20 kHz
60
dB
Supply voltage (Vintana1)
1.5
V
Common mode output voltage for USB-CEA
1.3
1.35
1.4
V
Isolation between D+/D
– during audio mode (20 Hz to 20 kHz)
60
dB
Crosstalk between right and left channels
USB-CEA stereo
–90
dB
Crosstalk RX/Tx (1 VPP output)
USB-CEA mono/stereo
–60
dB
Signal noise ratio (20 Hz to 20 kHz, A-weighted)
At 0 dBFs
60
dB
Phone speaker amplifier output impedance at 1 kHz
USB-CEA (DP/DM)
200
(1)
Audio digital filter =
–62 to 0 dB (1-dB steps) and 0 to 12 dB (6-dB steps)
Voice digital filter =
–36 to 12 dB (1-dB steps)
ARXPGA (volume control) =
–24 to 12 dB (2-dB steps)
Output driver (USB-CEA) =
–1 dB
(2)
The default gain setting assumes the ARXPGA has 0-dB gain setting (volume control) and output driver at 0.6-dB gain setting.
58
Audio/Voice Module (TPS65930 Device Only)
Copyright
2008–2011, Texas Instruments Incorporated
focus.ti.com: TPS65930/TPS65920
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